question_answer

The excess of pressure inside a soap bubble than that of the outer pressure is [MP PMT 1989; BHU 1995; MH CET 2002; RPET 2003; AMU (Engg.) 2000]

A)             \[\frac{2T}{r}\]          

B)             \[\frac{4T}{r}\]

C)             \[\frac{T}{2r}\]          

D)             \[\frac{T}{r}\]